Window well systems
A window well system including at least two window-well modules designed to be stacked is disclosed. Each module has a curved wall including an inner wall section, outer wall sections, an upper surface section unitary with the inner wall section, and a base having several indentations arranged along its underside. Of the outer wall sections, an upper outer wall section is unitary with the upper surface section. Between the upper outer wall section and a lower outer wall section is a curvilinear horizontal ledge. Between the inner and outer wall sections is an air space. Along the horizontal ledge are several projections oriented upwardly and sized and configured to mesh with and fit into the indentations formed in the base of a like window well module to be placed on the upper surface section.
The present application is a continuation-in-part (“CIP”) of nonprovisional patent application U.S. Ser. No. 17/546,164 filed Dec. 9, 2021, incorporated by reference in its entirety for priority purposes pursuant to Title 35, US Code, Section 120.
FIELDThe present subject matter is directed, in general, to the field of window wells and is more particularly directed to below-grade vertically stackable window-egress systems.
BACKGROUNDA basement (occasionally referred to as a “cellar”) may include one or more levels of a building, some of which are completely or partly below grade. The word cellar thus may apply to an entire underground level or merely to an underground room. A subcellar is a cellar that is further below grade. The term “grade” is used throughout this patent application to mean an average surface level outside a building. For certain residential buildings, a basement may be used to provide habitable space below the ground floor of buildings. Basements often include at least one window to allow natural light to enter; and such might provide access to the outside. Accordingly, while a basement can often be used in substantially the same manner as an additional above-ground floor of a building, the use of a basement depends largely on various factors including geographical regions, climate, soil conditions, seismic activity, building safety measures, and real estate codes.
Structural systems for windows provided below grade are well known. See, e.g., U.S. Pat. No. 1,840,397 to Keyes and U.S. Pat. No. 2,162,628 to Martin. Such systems, formerly known as directed to “areaway construction” are now characterized as relating to “window wells.”
As a person of ordinary skill in the art can appreciate, subsequent improvements have resulted in U.S. Pat. No. 4,704,828 to Kemp; U.S. Pat. No. 6,484,455 to Poole; U.S. Pat. No. 6,880,300 to Hawkes; U.S. Pat. No. 6,915,612 to Oakley; U.S. Pat. Nos. 7,171,786; 7,716,879; 7,730,673; 7,958,692, all to George; U.S. Pat. No. 7,444,784 to Brown; U.S. Pat. No. 7,549,256 to Watkins; and U.S. Pat. Nos. 7,730,674 and 7,861,468, both to Gernstein. Further improvements resulted in U.S. Pat. No. 7,966,776 to Cook; U.S. Pat. No. 8,250,815 to Siepel; U.S. Pat. No. 8,578,662 to Monk; U.S. Pat. No. 8,690,359 to Clock; U.S. Pat. No. 9,816,315 to Price et al.; and U.S. Pat. No. 10,662,708 to Snarr. For instance, the '708 patent to Snarr is directed to a window well egress system adapted and configured for allowing a small child to use a ladder to escape from a window well; and the '315 patent to Price et al. is directed to a window well cover with a screened frame, to prevent debris from falling into a window well, while allowing natural light to enter a cellar environment. The '359 patent to Clock discloses a system for a basement window that includes a periscope-type mechanism for enabling internal occupants to view the surrounding outdoor landscape. The '662 patent to Monk discloses a window wall enclosure having attachable steps. The '815 patent to Siepel is for a window well cover; and the '776 patent to Cook is directed to a textured window well.
The '468 and '674 patents, to Gernstein, are for window well structures enabling a person to escape from a basement environment through a basement window. The '256 patent to Watkins is directed to window well modules. The '784 patent to Brown discloses a system for securing a cover or grid over a window well. The '692; '673; '879; and '786 patents, to George, disclose various window well structural details. The '612 patent to Oakley is directed to window wells said to possess in-ground stability. The '300 patent to Hawkes is directed to window wells (which include integrally formed steps) that can be manufactured from various composite materials. The '455 patent to Poole is directed to a rigid window well. The '828 patent to Kemp is directed to snap-together window wells.
SUMMARYAccordingly, when reviewed individually or in combination, these patents do not solve problems found in many current window wells. For example, not only are window wells of the present subject matter—my present invention—made from lightweight durable materials. The present subject matter in embodiments includes a curved sidewall of one-piece construction having a smooth exterior surface that substantially reduces, or virtually eliminates, vertical load problems known to be present in prior art window wells; and the lightweight yet durable window wells of the present subject matter are stackable.
Window wells of the present subject matter include a ladder unitary-in-construction with an inner surface of the curved sidewall. Window wells of the present subject matter include a bottom region that is completely open, allowing the soil as well as any aggregate that may be present to uplift relatively freely whenever soil-uplifting conditions may occur.
Window wells of the present subject matter include many features noted in the summary. For example, horizontally oriented members (that I call “footholds”) are integral structural components which provide embodiments of the window well with its structural rigidity. Additional advantages shall become clear after reading the detailed description.
A window well unit (or module) of the present subject matter is characterized as comprising at least two, and preferably several, window-well modules that are designed to be vertically stacked. Each module has a curved wall that includes an inner wall section, at least two outer wall sections, an upper surface section that is unitary with the inner wall section, and a curvilinearly disposed base having several “cavities” (or indentations) or predetermined depth arranged along its underside. Of the at least two outer wall sections, an upper outer wall section is unitary with the upper surface section (which serves as an upper wall). Between the upper outer wall section and a lower outer wall section is a curvilinear horizontally disposed ledge. Between the inner and outer wall sections is an air space. Along the ledge are several “teeth” (or projections) of predetermined height oriented upwardly. The projections are sized and configured to mesh with and fit into indentations formed in a base of a like window-well module to be stacked atop the ledge. Each upwardly directed projection from a lower window well module, when disposed into an associated indentation of a window well module stacked on it, stabilizes the window well modules, providing superior stability to counteract lateral forces. When stacked, the projection-into-indentation relationship neutralizes most module-manufacturing “errors.”
Embodiments of the present subject matter are directed to a curvilinear area-well system including a plurality of vertically stacked units or modules that allow for hydrostatic pressure release from standing water outside of (and closely adjacent to) the area-well system, thereby preventing water pressure from building (which might) collapse stacked area-well modules. This feature enables a first region located within the curvilinear inner wall surfaces of the stacked area-well modules to dry more quickly than a second region located beyond curvilinear outer wall surfaces (of stacked units of the area-well system).
In window well modules of the present subject matter, the ledge includes several integral pads spaced along the ledge upper surface, for providing an air gap. These pads also serve as load-bearing surfaces, to compensate for manufacturing-tolerance “issues.”
In embodiments, a window-well module of the present subject matter includes a curved wall. The curved wall defines an inner-wall section and at least two outer-wall sections. These outer wall sections include upper and lower outer-wall sections. The curved wall also defines an upper-surface section that is unitary with the inner-wall section and the upper outer-wall section. The curved wall further defines a ledge unitary with the upper and lower outer-wall sections. The ledge defines one or more integral projections extending from it. The curved wall also defines a base unitary with the inner-wall section and the lower outer-wall section. The base includes an underside configured to engage with one or more integral projections extending from a surface of a ledge of a second window-well module. The window-well module includes a cover pivotable about an axis spaced from the upper-surface section. The curved wall further defines opposite end portions disposed transverse to the curved wall. The end portions are dimensioned and configured for mounting the window-well module to structural components of a building.
Throughout the FIGS. and detailed description (below), I will use similar reference numerals to identify related components and embodiments of the present subject matter.
DETAILED DESCRIPTIONU.S. Pat. No. 6,484,455 to Poole (disclosing rigid window wells and mentioned above) provides background regarding an environment for the present subject matter. Attention is therefore directed to
Attention is next directed to
In embodiments, the unitary window well 100 of the present subject matter includes a horizontally oriented first lateral support member 114 unitary with upper surface section 108 (
Attention is next directed to
See
While current embodiments of the window well modules 100L, 100U of the present subject matter have wall sections that are about 0.25 inches thick, a POSITA knows that wall thickness may be modified (e.g., increased) to reduce stress (e.g., load, impact, etc.) caused by an assortment of events or occurrences while in use. In addition, a POSITA (person of ordinary skill in the art) is aware it may at times be desirable to fill the hollow region between interior and exterior walls 104, 106 (
In embodiments, upper surface section 108 of window-well module 100 of the present subject matter can include a similar internal, embedded receptacle 140 adjacent to ledge 110 (
Let us briefly now return to
Next, briefly returning to
In other embodiments of the present subject matter, an upper window well unit or module 100U could include a cover, such as a louvered cover 146 (
In yet other embodiments of the unitary window well module 100A of the present subject matter, it is desirable that an upper, horizontally oriented lateral stiffener member 114A be spaced between an upper surface section 108A and a lower, horizontally oriented lateral member 116A, be unitary with the curved wall 102A, as shown in
The upper exterior wall section 212U is unitary with the ledge 210U (
In embodiments, an upper window well module 200U can include an upper step 240U unitary with interior wall section 204U (
Let us now investigate
In embodiments of the present subject matter, a plurality of weight-bearing pads 230U (
A variety of embodiments of the unitary window well units or modules of the present subject matter can be manufactured by several commercial processes including but not limited to blow molding, injection molding, and rotational (also known as “roto”) molding.
In addition, an assortment of embodiments of the unitary double-walled window well units or modules of the present invention could, for example, be made of such lightweight materials as cast aluminum or polyolefin, a type of polymer having the general formula (CH2CHR)n. Polyolefins are derived from olefins (also known as alkenes, a type of monomer having a double bond for making polymeric materials). The more dominant polyolefins, in a commercial sense, include polyethylene and polypropylene. Polyolefins having “specialized” properties are polybutene, polyisobutylene, and polymethylpentene.
Accordingly, for certain embodiments it may be desirable to manufacture window wells of the present subject matter from a material selected from the group consisting of polyethylene (e.g., high density polyethylene), polypropylene, polybutene, polyisobutene, polymethylpentene, aluminum (cast or not), a sintered metal, a composite, and graphene.
It could be economical to produce window well modules by three-dimensional (“3D”) printing methods, also known as additive printing. Well known 3D printing methods, used to manufacture useful articles from alumina, zirconia, zircon (i.e., zirconium silicate), and silicon carbide are described in U.S. Pat. No. 5,387,380 to Cima et al. In addition, known 3D printing methods used to make various products from Al/Mg particles coated by metal (i.e., copper, nickel, zinc, or tin) are described in U.S. Pat. No. 7,141,207 to Jandeska et al.
Illustrated and described throughout this patent specification are embodiments of a window well system. The system includes two or more window well modules vertically arranged. Each module includes a curved wall having an inner wall section, an upper wall section unitary with the inner wall section, and a base defining a plurality of indentations. The curved wall includes an outer wall section unitary with the upper wall section. Between the inner and outer wall sections is an air space. The outer wall section includes a ledge along which a plurality of projections is arranged. The plural projections are dimensioned and configured to mesh with and fit into each associated one of the plurality of indentations of a window well module mounted immediately above it. While the system has been described with reference to exemplary embodiments, the present subject matter is not limited to embodiments described. On the contrary various alternatives, changes, and modifications will become apparent to a person of ordinary skill in the art (“POSITA”) after this patent application has been read and the figures reviewed. Therefore, alternatives, changes, and modifications are to be considered as forming a part of the present subject matter insofar as they fall within the spirit and scope of appended claims.
Claims
1. A window-well system comprising at least two vertically stacked window-well modules, wherein one of the at least two vertically stacked window-well modules is an upper window-well module and another one of the at least two vertically stacked window-well modules is a lower window-well module, and wherein each of the at least two vertically stacked window-well modules comprises:
- a curved wall defining:
- a curved inner-wall section,
- a curved outer-wall section spaced from the inner-wall section;
- a curvilinear upper-surface section unitary with the inner-wall section;
- a curvilinear ledge spaced from the upper-surface section and unitary with the upper and lower outer-wall section, wherein the ledge defines two or more integral projections extending therefrom in a direction of the upper-surface section; and
- a curvilinear base spaced from the ledge and unitary with the outer-wall section, wherein the base defines an underside surface defining integral indentations configured to engagedly receive the two or more integral projections extending from the ledge of an upper window-well module stacked thereabove.
2. The window-well system of claim 1, including a cover configured to be associated with the upper window-well module and pivotable about an axis spaced from the upper-surface section of the upper window-well module.
3. The window-well system of claim 1, wherein the curved wall further defines opposite end portions disposed transverse to and extending radially outwardly from the curved wall, and wherein the end portions are configured for mounting the window-well system to a building structure.
4. The window-well system of claim 1, wherein the curved wall is manufactured from a material selected from the group consisting of aluminum, graphene, sintered metal, polymethylpentene, polyisobutylene, polyurethane, polyethylene, polypropylene, polybutene, and a composite, and wherein the curved wall further defines a hollow region located between the inner-wall section and the outer-wall section.
5. The window-well system of claim 1, wherein the inner-wall section and the outer-wall section each have a thickness of about 0.25 inches.
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Type: Grant
Filed: Feb 29, 2024
Date of Patent: Jun 2, 2026
Patent Publication Number: 20240218677
Inventor: Torrey Sanborn (Larkspur, CO)
Primary Examiner: James M Ference
Application Number: 18/592,232
International Classification: E04F 17/06 (20060101);